# AddressBase Products May 2025 – Epoch 118 {% hint style="info" %} ## Object Without Postal Address (OWPA) enhancement in Epoch 118 for AddressBase Premium and AddressBase Plus There is a small uplift in this release of both AddressBase Premium and AddressBase Plus due to an improvement in the Object Without Postal Address (OWPA) features contained within these two products. As a result of this uplift, COU counts are around 30% larger, in comparison to the 3 previous releases. This may result in slower processing times. {% endhint %} ## Record counts | Product | Full Supply Record Count | Change-Only Update Record Count | | ---------------------- | ------------------------ | ------------------------------- | | OS Open UPRN | 41 196 104 | N/A | | AddressBase | 30 705 430 | 152 191 | | AddressBase Plus | 38 390 448 | 1 085 737 | | AddressBase Premium | See rows below | See rows below | | Street | 1 515 628 | 4 732 | | Street Descriptor | 1 639 498 | 3 233 | | BLPU | 41 196 104 | 790 039 | | Classification | 45 017 696 | 446 122 | | LPI | 46 450 006 | 620 587 | | Organisation | 1 398 046 | 19 314 | | Delivery Point Address | 30 816 296 | 64 760 | | Application Cross Ref. | 199 441 353 | 1 235 928 | | Successor | 0 | 0 | {% hint style="info" %} * The Full Supply record counts are based on a Managed Great Britain Set (MGBS). If you have ordered your national coverage via the online ordering system using a polygon outline, then your counts may differ. * Please note that Change-Only Updates (COUs) are not available for the OS Open UPRN product. {% endhint %} ## Product supply comparison There is a difference in product counts between taking a national Managed Great Britain Set (MGBS) and a national Area of Interest (AOI). This is because the two supplies use different selection criteria. The differences are shown in the following table, allowing for you to validate your data holdings once you have loaded the latest release of AddressBase data. The national AOI refers to the pre-selection GB polygon from our download store. Therefore, if you have drawn your own AOI, the count will vary. If you are unsure of your supply type, please check this with your OS Relationship Manager. | Product | MGBS Full Count | National AOI Full Count | Difference | | ---------------------- | --------------- | ----------------------- | -------------- | | AddressBase | 30 705 430 | 30 705 430 | 0 | | AddressBase Plus | 38 390 448 | 38 390 426 | 22 | | AddressBase Premium | See rows below | See rows below | See rows below | | Street | 1 515 628 | 1 515 625 | 3 | | Street Descriptor | 1 639 498 | 1 639 495 | 3 | | BLPU | 41 196 104 | 41 196 078 | 26 | | Classification | 45 017 696 | 45 017 670 | 4 | | LPI | 46 450 006 | 46 449 979 | 27 | | Organisation | 1 398 046 | 1 398 044 | 2 | | Delivery Point Address | 30 816 296 | 30 816 296 | 0 | | Application Cross Ref. | 199 441 353 | 199 441 327 | 26 | | Successor | 0 | 0 | 0 | It is important that COUs are processed with Deletes first, then Inserts and Updates. This is to ensure that updates are applied in the correct order. Guidance on this can be found in the '[Working with COU data' page in the AddressBase Core Getting Started Guide](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/working-with-cou-data.md). ## Changed records If you receive a Change-Only Update (COU) supply for your AddressBase product, you will receive Insert, Update and Delete records within the supplied file. The following tables detail the numbers of these records which can be expected in an **MGBS supply**, and also how many tiles are affected if you take your supply as Changed Chunks. ### AddressBase | Change Type | Count | | ------------------------ | ------- | | Inserts | 39 607 | | Updates | 103 385 | | Deletes | 9 199 | | COU Populated Tile Count | 5 450 | ### AddressBase Plus | Change Type | Count | | ------------------------ | ------- | | Inserts | 146 606 | | Updates | 896 728 | | Deletes | 42 403 | | COU Populated Tile Count | 8 520 | ### AddressBase Premium | AddressBase Premium Table | Inserts | Updates | Deletes | | ------------------------- | ------- | ------- | ------- | | Street | 1 524 | 3 177 | 31 | | Street Descriptor | 1 572 | 1 627 | 34 | | BLPU | 146 717 | 640 377 | 2 945 | | Classification | 172 147 | 242 226 | 31 749 | | LPI | 168 697 | 448 093 | 3 797 | | Organisation | 5 785 | 5 762 | 7 767 | | Delivery Point Address | 40 444 | 14 910 | 9 406 | | Application Cross Ref. | 564 892 | 636 931 | 34 105 | ## Source data currency The following information relates to the currency of the source data used in the creation of Epoch 118: | Data Source | Date | | ------------------------------------ | ---------------- | | Royal Mail PAF | 27 March 2025 | | National Land and Property Gazetteer | 27 March 2025 | | One Scotland Gazetteer | 10 March 2025 | | VOA Non-Domestic Rates | 25 March 2025 | | VOA Council Tax | 25 March 2025 | | OS MasterMap Topography Layer | 27 February 2025 | | OS MasterMap Highways Network | 07 March 2025 | | Code-Point with Polygons | 02 January 2025 | | Boundary-Line | 02 October 2024 | ## Data issues ### AddressBase Details of live and resolved data issues for AddressBase will be communicated on the [AddressBase Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-known-data-issues.md). This page will provide details of their impacts and updates on the expected time frame for their resolution. ### AddressBase Plus issues Details of live and resolved data issues for AddressBase Plus will be communicated on the [AddressBase Plus Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase-plus/addressbase-plus-known-data-issues.md). This page will provide details of their impacts and updates on the expected time frame for their resolution. ### AddressBase Premium Details of live and resolved data issues for AddressBase Premium will be communicated on the [AddressBase Premium Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase-premium/addressbase-premium-known-data-issues-service-disruptions-and-planned-maintenance.md). This page will provide details of their impacts and updates on the expected time frame for their resolution. ## Improvements in Epoch 118 ### Valuation Office Agency matching The match rates for Council Tax and Non-Domestic Rates for Epoch **Epoch 118** are detailed as follows based on Valuation Office Agency (VOA) records up to **25 March 2025**. The match rate is applicable to the AddressBase Premium product. | Data Source | Records Received | % Matched | | ------------------ | ---------------- | --------- | | Council Tax | 27 251 204 | 99.91 | | Non-Domestic Rates | 2 120 750 | 96.46 | ## Next release The next release of AddressBase products, Epoch 119, is scheduled for **12 June 2025**. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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